The route of the pipeline crosses rivers, streams, railway line and roads including two motorways.
At locations where it is impractical to lay the pipe from the surface, such as the crossing at the River Towy near Carmarthen, then tunnels are excavated deep in the ground.

"We have spent over a year in discussions with the key environmental consultees in routing this pipeline and we believe we have a very good balance between construction impact and the evironmental impart."